-sə(r), chiefly Brit -zə noun
( -s )
: one that erases: as
a. : an instrument with a handle and sharp blade used to scrape out writing quickly — called also steel eraser
b. : a piece of a rubber composition usually containing vulcanized oil and pumice for erasing pencil, ink, or other marks
a wood-encased eraser of pencil shape
a ferrule secures the eraser to the pencil
a typewriter eraser with brush
c. : a block of absorbent material (as felt strips or sponge rubber) usually fastened to a hard back and used for removing chalk marks from a slate or blackboard
d. : a wooden instrument with a flat smooth point used to obliterate braille dots by pressure
e. : a chemical solution for removing ink marks : eradicator